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Ampere Altra Max server CPU, silver metal package with gold LGA 4926 contacts, 128 core 3.0 GHz

Ampere

Ampere Altra Max M128-30 Server Processor AC-212825002 128-core 3.0 GHz LGA 4926 183W

SKU CH-DEKV-50MFE MPN AC-212825002

128-core server processor running at a consistent 3.0 GHz with eight DDR4-3200 channels and 128 PCIe 4.0 lanes

  • NameAmpere Altra Max
  • CPU Socket TypeLGA 4926
  • # of Cores128-Core
  • # of Threads128
  • Operating Frequency3.0 GHz
  • L1 Cache64K Instruction and 64K Data per Core
  • 128 single-threaded cores deliver predictable performance at a consistent 3.0 GHz
  • 128 PCIe 4.0 lanes provide high-bandwidth I/O for storage and networking
  • 8-channel DDR4-3200 with ECC supports up to 4 TB across 16 DIMMs
  • TSMC 7 nm FinFET process enables 128 cores within a 183 W power envelope
  • LGA 4926 socket with 1 MB L2 per core optimises density for cloud-native workloads

128-core server processor for cloud-native workloads

The Ampere Altra Max M128-30 is a 128-core, 128-thread server CPU built on TSMC 7 nm FinFET technology. It targets cloud-native environments that demand high core counts and predictable performance. The processor operates at a consistent 3.0 GHz frequency across all single-threaded cores. It fits the LGA 4926 socket and carries a 183 W average power rating.

4 TB DDR4-3200 capacity with 8-channel bandwidth

Eight 72-bit DDR4-3200 channels with ECC support up to 16 DIMMs at 2 DIMMs per channel, delivering a maximum memory capacity of 4 TB. Each core provides 1 MB of L2 cache and 64K instruction plus 64K data L1 cache. The 128 PCIe 4.0 lanes handle extensive I/O, while an optional 64-lane CCIX interface enables multi-socket scaling. Memory bandwidth and cache hierarchy suit throughput-oriented tasks; latency-sensitive workloads may hit limits when working sets exceed per-core cache.

Upgrades from lower-core Altra or Altra Max SKUs

The M128-30 replaces 32-core, 64-core, 80-core or 96-core Ampere Altra family processors when thread density and memory capacity become bottlenecks. The jump is worth it for deployments that can utilise 128 concurrent threads and 4 TB of memory within a 183 W envelope. Buyers who need fewer cores, less memory bandwidth or a different socket should evaluate other Ampere Altra family models instead.

Points forts

  • 128 single-threaded cores deliver predictable performance at a consistent 3.0 GHz
  • 128 PCIe 4.0 lanes provide high-bandwidth I/O for storage and networking
  • 8-channel DDR4-3200 with ECC supports up to 4 TB across 16 DIMMs
  • TSMC 7 nm FinFET process enables 128 cores within a 183 W power envelope
  • LGA 4926 socket with 1 MB L2 per core optimises density for cloud-native workloads

Caractéristiques

BrandAmpere
SeriesAmpere Altra Family
NameAmpere Altra Max
ModelM128-30
CPU Socket TypeLGA 4926
# of Cores128-Core
# of Threads128
Operating Frequency3.0 GHz
L1 Cache64K Instruction and 64K Data per Core
L2 Cache1MB per Core
64-Bit SupportYes
Manufacturing TechTSMC 7 nm FinFET
Integrated Memory Controller SpeedDDR4 3200
Maximum Memory CapacityUp to 16 DIMMs (2DPC) and 4 TB total memory
Memory Channel8 Channel
Virtualization Technology SupportYes
PCI Express Revision4.0
Max # of PCI Express Lanes128 Lanes PCIe Gen4 (optional 64 lane CCIX for multi-socket support)
Average CPU Power183W
Poids d’expédition0.91 kg
Dimensions du colis203 × 178 × 127 mm

Questions sur cet article

Will the 128 PCIe 4.0 lanes on the Altra Max M128-30 work with my existing PCIe 3.0 expansion cards?

Yes, the 128 PCIe 4.0 lanes are backward compatible with PCIe 3.0 cards; they will operate at Gen 3 speeds when older adapters are installed.

How can I verify the processor is running at its consistent 3.0 GHz frequency after installation?

Check the CPU frequency reported by the operating system or BMC; the Altra Max M128-30 maintains a fixed 3.0 GHz without turbo boost, so the reading should stay at that value under load.

Does the AC-212825002 include a heatsink or thermal paste, and what memory do I need to buy?

The processor is sold as a tray unit without a cooler or thermal paste; you must purchase DDR4-3200 ECC DIMMs separately, up to 16 modules for 4 TB total capacity.

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